iText is a PDF library that allows you to CREATE, ADAPT, INSPECT and MAINTAIN documents in the Portable Document Format (PDF):
- Generate documents and reports based on data from an XML file or a database
- Create maps and books, exploiting numerous interactive features available in PDF
- Add bookmarks, page numbers, watermarks, and other features to existing PDF documents
- Split or concatenate pages from existing PDF files
- Fill out interactive forms
- Serve dynamically generated or manipulated PDF documents to a web browser
iText is used by Java, .NET, Android and GAE developers to enhance their applications with PDF functionality.
iTextSharp is the .NET port.
Several iText engineers are actively supporting the project on the iText mailing-list itext-questions@lists.sourceforge.net and on StackOverflow: http://stackoverflow.com/questions/tagged/itext

uGet, the Best Download Manager for Linux.
uGet is an Open Source download manager application for GNU/Linux developed with GTK+, which also comes packaged as a portable Windows app.
uGet uses very few resources while at the same time packs an unparalleled powerful feature set. These features include a Queue, Pause/Resume, Multi-Connection (with adaptive segment management), Mirrors (multi-source), Multi-Protocol, Advanced Categorization, Clipboard Monitor, Batch Downloads, Individualized Category Default Settings, Speed Limiting, Total Active Downloads Control, and so much more!
For the full Features list go to http://ugetdm.com/features
- Quick Links -
Blog: http://ugetdm.com/blog
Support Forum: http://ugetdm.com/forum
Tutorials: http://ugetdm.com/tutorials
RSS Feeds: http://ugetdm.com/rss
Gallery: http://ugetdm.com/gallery
Frequently Asked Questions (FAQs): http://ugetdm.com/faqs

Jahshaka is a video and film compositing, editing and special fx system that uses OpenGL & OpenML hardware rendering to give operators real time interactivity. The system is cross platform, and also includes full CG, paint and image processing modules.